I agree with other posters. See a gynecologist. Number 1 could be a variety of things, including the fact that you might not be using enough lubrication. Sometimes a vagina is just too small for a large penis. Don't force it, it will only cause more problems. And as for number 2, see a doctor just to make sure that there is nothing wrong.
You need to see a gynecologist about both these problems but especially about the first one. It is very bad for that place to rip and especially if it happens over and over again and never heals. You may need to have some stitches to sew the area up so it can heal properly. this is also sometimes, why, when a woman is delivering a large baby, the doctor will make a small cut there to provide enough room and prevent ripping, because those rips don't heal right, usually. A small cut on the other hand can easily be put back together with a couple of stitches and it does much less damage. and after the area heals, you need to take care that this does not happen again. (but that is too much to get into now)
Usually, with birth control pills there is less bleeding and less cramping, so it surprises me that you have cramps generally, and this last time had these heavy blood clots.
I don't think if you are actually taking the pill as prescribed that you did have a miscarriage. These big clots happen but as I said, less usually when on birth control pills. So this is another thing you may want to discuss with the doctor.
I really, really think you need to see a doctor, like i said before, because of that ripping. it's not good, LaKid.
See a doctor. Only way to be sure.